Home / 28,017.18-42,019.29-8,290.98

Finding the Fourth Proportional to 28,017.18, 42,019.29 and 8,290.98

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Solution

The fourth proportional to 28,017.18, 42,019.29 and 8,290.98 is: 12,434.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,017.18 : 42,019.29 = 8,290.98 : x
  2. Step 2: Convert to fraction form
    28,017.18/42,019.29 = 8,290.98/x
  3. Step 3: Cross multiply
    28,017.18x = 42,019.29 × 8,290.98
  4. Step 4: Simplify right side
    28,017.18x = 348,381,093.00
  5. Step 5: Solve for x
    x = 348,381,093.00/28,017.18
  6. Step 6: Final answer
    x = 12,434.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.